Preface ....................................................... xxi
Acknowledgments ............................................. xxiii
Cold Spring Harbor Protocols Online ........................... xxv
Quotation Credits ........................................... xxvii
Volume 3
Chapter 15
Expression of Cloned Genes in Escherichia coli ............... 15.1
INTRODUCTION PROTOCOLS
1 Expression of Cloned Genes in E. coli Using IPTG-
inducible Promoters ...................................... 15.14
2 Expression of Cloned Genes in E. coli Using
the Bacteriophage T7 Promoter ............................ 15.20
3 Expression of Cloned Genes in E. coli Using
the Bacteriophage λ p1 Promoter .......................... 15.25
4 Expression of Secreted Foreign Proteins Using
the Alkaline Phosphatase Promoter (phoA) and Signal
Sequence ................................................. 15.30
·Additional Protocol: Subcellular Localization of PhoA
Fusion Proteins ......................................... 15.35
5 'Purification of Fusion Proteins by Affinity
Chromatography on Glutathione Agarose .................... 15.36
6 Purification of Maltose-binding Fusion Proteins by
Affinity Chromatography on Amylose Resin ................. 15.40
7 Purification of Histidine-tagged Proteins by
Immobilized Ni2+ Absorption Chromatography ............... 15.44
·Alternative Protocol: Elution of Polyhistidine-tagged
Proteins from Metal Affinity Columns Using Decreasing
pH ...................................................... 15.47
·Additional Protocol: Regeneration of NTA-Ni2+ -
Agarose ................................................. 15.48
8 Purification oi Expressed Proteins from Inclusion
Bodies ................................................... 15.49
·Additional Protocol: Refolding Solubilized Proteins
Recovered from Inclusion Bodies ......................... 15.53
INFORMATION PANELS
Expression of Cloned Genes .................................. 15.55
E. coli Expression Systems .................................. 15.56
LacZ Fusions ................................................ 15.57
Chaotropic Agents ........................................... 15.60
Chapter 16
Introducing Cloned Genes into Cultured Mammalian Cells ....... 16.1
INTRODUCTION PROTOCOLS
1 DNA Transfection Mediated by Lipofection .................. 16.7
·Additional Protocol: Histochemical Staining of Cell
Monolayers for β-Gaiactosidase ......................... 16.13
2 Calcium-phosphate-mediated Transfection of Eukaryotic
Cells with Plasmid DNAs .................................. 16.14
·Alternative Protocol: High-efficiency Calcium-
phosphate-mediated Transfection of Eukaryotic Cells
with Plasmid DNAs ....................................... 16.19
3 Calcium-phosphate-mediated Transfection of Cells with
High-molecular-weight Genomic DNA ........................ 16.21
·Alternative Protocol: Calcium-phosphate-mediated
Transfection of Adherent Cells .......................... 16.25
·Alternative Protocol: Calcium-phosphate-mediated
Transfection of Cells Growing in Suspension ............. 16.26
4 Transfection Mediated by DEAE-Dextran: High-efficiency
Method ................................................... 16.27
·Alternative Protocol: Transfection Mediated by DEAE-
Dextran: Increased Cell Viability ....................... 16.32
5 DNA Transfection by Electroporation ...................... 16.33
6 DNA Transfection by Biolistics ........................... 16.37
·Additional Protocol: Histochemical Staining of Cell
Monolayers or Tissue for β-Glucuronidase ............... 16.42
7 DNA Transfection Using Polybrene ......................... 16.43
INFORMATION PANELS
Cotransformation ............................................ 16.47
Selective Agents for Stable Transformation .................. 16.48
Lipofection ................................................. 16.50
Transfection of Mammalian Cells with Calcium Phosphate-DNA
Coprecipitates ........................................... 16.52
Chloroquine Diphosphate ..................................... 16.53
Electroporation ............................................. 16.54
Chapter 17
Analysis of Gene Expression in Cultured Mammalian Cells ...... 17.1
INTRODUCTION PROTOCOLS
CIs-acting Regions and Trans-acting Factors
1 Mapping Protein-binding Sites on DNA by DNase I
Footprinting .............................................. 17.4
·Alternative Protocol: Mapping Protein-binding Sites on
DNA by Hydroxyl Radical Footprinting .................... 17.12
2 Gel Retardation Assays for DNA-binding Proteins .......... 17.13
·Additional Protocol: Supershift Assays .................. 17.17
·Additional Protocol: Competition Assays ................. 17.17
3 Mapping DNase-l-hypersensitive Sites ..................... 17.18
Analysis of Primary Transcripts
4 Transcriptional Run-on Assays ............................ 17.23
Reporter Assays
Introduction to Reporter Assays: CAT, Luciferase, and
β-galactosidase (Protocols 5-7) ......................... 17.30
5 Measurement of Chloramphenicol Acetyltransferase in
Extracts of Mammalian Cells Using Thin-layer
Chromatography ........................................... 17.33
·Alternative Protocol: Measurement of CAT by Extraction
with Organic Solvents ................................... 17.40
·Alternative Protocol: Measurement of CAT following
Diffusion of Reaction Products into Scintillation
Fluid ................................................... 17.41
6 Assay for Luciferase in Extracts of Mammalian Cells ...... 17.42
·Alternative Protocol: Using a Scintillation Counter
to Measure Luciferase ................................... 17.46
·Alternative Protocol: Assay for Luciferase in Cells
Growing in 96-well Plates ............................... 17.47
7 Assay for β-galactosidase in Extracts of Mammalian
Cells .................................................... 17.48
Inducible Systems
8 Tetracycline as Regulator of Inducible Gene Expression
in Mammalian Cells ....................................... 17.52
Stage 1: Stable Transfection of Fibroblasts with
pTet-tTAk ....................................... 17.60
Stage 2: Stable Transfection of Inducible tTA-
expressing NIH-3T3 Cells with Tetracycline-
regulated Target Genes .......................... 17.65
Stage 3: Analysis of Protein Expression in Transfected
Cells ........................................... 17.68
·Alternative Protocol: Tetracycline-regulated Induction
of Gene Expression in Transiently Transfected Cells
Using the Autoregulatory tTA System ..................... 17.70
9 Ecdysone as Regulator of Inducible Gene Expression in
Mammalian Cells .......................................... 17.71
INFORMATION PANELS
Footprinting DNA ............................................ 17.75
Gel Retardation Assays ...................................... 17.78
Baculoviruses and Baculovirus Expression Systems ............ 17.81
Green Fluorescent Proteins .................................. 17.84
Epitope Tagging ............................................. 17.90
Chloramphenicol Acetyltransferase ........................... 17.94
Luciferase .................................................. 17.96
β-galactosidase ............................................. 17.97
Chapter 18
Protein Interaction Technologies ............................. 18.1
INTRODUCTION PROTOCOLS
1 Two-hybrid and Other Two-component Systems ................ 18.6
Stage 1: Characterization of a Bait-LexA Fusion
Protein ......................................... 18.17
·Alternative Protocol: Assay of β-galactosidase Activity
by Chloroform Overlay 18.28 Stage 2: Selecting an
Interactor .............................................. 18.30
Stage 3: Second Confirmation of Positive Interactions .... 18.38
·Alternative Protocol: Rapid Screen for Interaction Trap
Positives ............................................... 18.46
2 Detection of Protein-Protein Interactions Using Far
Western with GST Fusion Proteins ......................... 18.48
·Additional Protocol: Refolding of Membrane-bound
Proteins ................................................ 18.53
·Alternative Protocol: Detection of Protein-Protein
Interactions with Anti-GST Antibodies ................... 18.54
3 Detection of Protein-Protein Interactions Using the GST
Fusion Protein Pulldown Technique ........................ 18.55
4 Identification of Associated Proteins by
Coimmunoprecipitation .................................... 18.60
5 Probing Protein Interactions Using GFP and Fluorescence
Resonance Energy Transfer ................................ 18.69
Stage 1: Labeling Proteins with Fluorescent Dyes ......... 18.80
Stage 2: Cell Preparation for FLIM-FRET Analysis ......... 18.84
Alternative Protocol: Preparation of Fixed Cells for
·FLIM-FRET Analysis ...................................... 18.87
·Alternative Protocol: Microinjection of Live Cells ...... 18.88
Stage 3: FLIM-FRET Measurements .......................... 18.90
Analysis of Interacting Proteins with Surface Plasmon
Resonance Spectroscopy Using BIAcore ..................... 18.96
Stage 1: Preparation of the Capture Surface and Test
Binding ........................................ 18.104
Stage 2: Kinetic Analysis of the Antibody-Antigen
Interaction .................................... 18.108
INFORMATION PANELS
Filamentous Phage Display .................................. 18.115
Genomics and the Interaction Trap .......................... 18.123
Interaction Trap and Related Technologies .................. 18.125
Appendices
1 Preparation of Reagents and Buffers Used in Molecular
Cloning ................................................... A1.1
2 Media ..................................................... A2.1
3 Vectors and Bacterial Strains ............................. A3.1
4 Enzymes Used in Molecular Cloning ......................... A4.1
5 Inhibitors of Enzymes ..................................... A5.1
6 Nucleic Acids ............................................. A6.1
7 Codons and Amino Acids .................................... A7.1
8 Commonly Used Techniques in Molecular Cloning ............. A8.1
9 Detection Systems ......................................... A9.1
10 DNA Array Technology ..................................... A10.1
11 Bioinformatics ........................................... A11.1
12 Cautions ................................................. A12.1
13 Suppliers ................................................ A13.1
14 Trademarks ............................................... A14.1
Appendix References ............................................ R1
INDEX, 1.1 ..................................................... R1
|